Revert of Remove prefixed Pointer Lock API.

LayoutTests/pointer-lock/locked-element-removed-from-dom-prefixed-expected.txt

Index: LayoutTests/pointer-lock/locked-element-removed-from-dom-prefixed-expected.txt
diff --git a/LayoutTests/pointer-lock/locked-element-removed-from-dom-prefixed-expected.txt b/LayoutTests/pointer-lock/locked-element-removed-from-dom-prefixed-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f88d51900348ced64f483a8332e44e88960da324
--- /dev/null
+++ b/LayoutTests/pointer-lock/locked-element-removed-from-dom-prefixed-expected.txt
@@ -0,0 +1,21 @@
+Test removing a locked element from a document causes lock to be released.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+     Lock target in iframe. (main document handler).
+     Lock target in iframe. (iframe handler)
+PASS onwebkitpointerlockchange received after: Lock target in iframe. (iframe handler)
+PASS targetIframe1.contentDocument.webkitPointerLockElement is targetDiv1
+PASS targetDiv1.parentElement.parentElement is targetIframe1.contentDocument.body
+     Remove targetDiv1's parent from iframe & immediately lock target2. (main document handler)
+     Remove targetDiv1's parent from iframe & immediately lock target2. (iframe handler)
+PASS document.webkitPointerLockElement is null
+PASS targetDiv1.parentElement.parentElement is null
+PASS onwebkitpointerlockerror received after: Remove targetDiv1's parent from iframe & immediately lock target2. (main document handler)
+PASS onwebkitpointerlockchange received after: Remove targetDiv1's parent from iframe & immediately lock target2. (iframe handler)
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
+